<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="./styles/style.css">
    <title>Document</title>
</head>
<body >
<div class="theme-1">
    <div class="container">
        <div class="left">
            Left
        </div>
        <div class="right">
            Right
            <button class="button">Button</button>
        </div>
    </div>
</div>

<div class="theme-2">
    <div class="container">
        <div class="left">
            Left
        </div>
        <div class="right">
            Right
            <button class="button">Button</button>
        </div>
    </div>
</div>
 </body>
</html>